tl;dr
The display the author doesn't like is a specific model Dell QD-OLED with a sub pixel arrangement that causes a fringe above / below text.
There are macro screenshots that reveal the sub pixel details of a preferred LCD compared the disliked Dell OLED, and it's easy to agree with the author's discontentment.
But the categorical complaint about "OLED" is an over generalization.
Treat the report as a warning to investigate the sub pixel characteristics of any monitor you may be considering.
+1.
While the author's complaint is perfectly valid, in practice the advantages of even current OLEDs - for me - far outweigh any disadvantages due to subpixel layout fringing and everything else. Even for programming, the lack of backlight and resulting infinite contrast makes such a huge difference in my day to day life that I refuse to use a non-OLED monitor anymore for any purpose whatsoever. Heck it could be half the DPI and I'd still go for OLED anytime.
The only reason LCDs still exist is price, nothing else.
Yeah. In fairness this may be irrelevant as I've only had OLED on phone screens and not monitors, but for me OLED is about reducing the light coming off the panel. Any IPS I've tried just hurts even on the lowest brightness. The push against #000000 in recent years in favor of brighter dark modes and reducing contrast by making the background lighter instead of the foreground darker has been a big aggravation.
Author also thought it might be a backlight failed for his first oled problem....
> specific model Dell QD-OLED with a sub pixel arrangement that causes a fringe
It’s in fact most, if not all of the PC display OLEDs on the market today because they almost all use non standard subpixel arrangements, but will change soon with the introduction of newer generation panels.
> But the categorical complaint about "OLED" is an over generalization
It’s really not, given again we are talking about the majority of PC OLEDs in production today having subpixel layouts that cause issues for users with text rendering.
Agreed. Personally, I find WOLED quite comfortable, especially for text, since I spend 90% of my time looking at terminals: white text on a black background. Having the vast majority of the display off feels wonderful.